Site Speed Insights: Web Vitals Visualizer icon

Site Speed Insights: Web Vitals Visualizer

by Rohit Gupta

v1.1.0 Updated Jan 8, 2026 190KiB
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Description

Site Speed Insights: Web Vitals Visualizer helps developers debug and visualize performance metrics directly inside the page. It measures Core Web Vitals in real time and shows interactive overlays for layout shifts, input delays, and paint timings, making it easier to understand what actually caused performance issues. It also provides optional field performance insights to help you compare live page behavior with real-user Web Vitals data. ✅ Real-time Web Vitals tracking (CLS, LCP, INP, FCP, TTFB) ✅ Overlay visualization for layout shifts, slow inputs, and paint timings ✅ Field performance insights using Chrome UX Report (CrUX) ✅ Works on any website you open ✅ No data collection — all analysis runs locally Ideal for: Front-end engineers, performance auditors, UX developers, and QA testers. Credits: Meter icons created by Freepik - Flaticon (https://www.flaticon.com/free-icons/meter)
Site Speed Insights: Web Vitals Visualizer screenshot 1Site Speed Insights: Web Vitals Visualizer screenshot 2Site Speed Insights: Web Vitals Visualizer screenshot 3Site Speed Insights: Web Vitals Visualizer screenshot 4Site Speed Insights: Web Vitals Visualizer screenshot 5

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Permissions (4)

Permissions

activeTab Can access the current tab when you click the extension scripting Can inject scripts into web pages storage Can store data locally in your browser webNavigation Can monitor navigation events

Details

Version 1.1.0
Updated Jan 8, 2026
Size 190KiB
First Seen Mar 29, 2026